1. 测试了外部高精度RTC(PCF85063)的驱动，时钟功能正常，测试通过
This commit is contained in:
Misaki
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/*****************************************************************************
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* | File : PCF85063.c
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* | Author : Waveshare team
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* | Function : PCF85063 driver
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* | Info :
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*----------------
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* | This version: V1.0
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* | Date : 2024-02-02
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* | Info : Basic version
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*
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******************************************************************************/
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#include "PCF85063.h"
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datetime_t datetime= {0};
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static uint8_t decToBcd(int val);
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static int bcdToDec(uint8_t val);
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const unsigned char MonthStr[12][4] = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov","Dec"};
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/******************************************************************************
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function: PCF85063 initialized
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parameter:
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Info:Initiate Normal Mode, RTC Run, NO reset, No correction , 24hr format, Internal load capacitane 12.5pf
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******************************************************************************/
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void PCF85063_Init()
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{
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uint8_t Value = RTC_CTRL_1_DEFAULT|RTC_CTRL_1_CAP_SEL;
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ESP_ERROR_CHECK(I2C_Write(PCF85063_ADDRESS, RTC_CTRL_1_ADDR, &Value, 1));
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// datetime_t Now_datetime= {0};
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// Now_datetime.year = 2024;
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// Now_datetime.month = 9;
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// Now_datetime.day = 20;
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// Now_datetime.dotw = 5;
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// Now_datetime.hour = 9;
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// Now_datetime.minute = 50;
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// Now_datetime.second = 0;
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// PCF85063_Set_All(Now_datetime);
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}
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void PCF85063_Loop(void)
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{
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PCF85063_Read_Time(&datetime);
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}
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/******************************************************************************
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function: Reset PCF85063
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parameter:
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Info:
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******************************************************************************/
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void PCF85063_Reset()
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{
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uint8_t Value = RTC_CTRL_1_DEFAULT|RTC_CTRL_1_CAP_SEL|RTC_CTRL_1_SR;
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ESP_ERROR_CHECK(I2C_Write(PCF85063_ADDRESS, RTC_CTRL_1_ADDR, &Value, 1));
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}
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/******************************************************************************
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function: Set Time
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parameter:
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Info:
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******************************************************************************/
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void PCF85063_Set_Time(datetime_t time)
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{
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uint8_t buf[3] = {decToBcd(time.second),
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decToBcd(time.minute),
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decToBcd(time.hour)};
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ESP_ERROR_CHECK(I2C_Write(PCF85063_ADDRESS, RTC_SECOND_ADDR, buf, 3));
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}
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/******************************************************************************
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function: Set Date
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parameter:
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Info:
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******************************************************************************/
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void PCF85063_Set_Date(datetime_t date)
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{
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uint8_t buf[4] = {decToBcd(date.day),
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decToBcd(date.dotw),
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decToBcd(date.month),
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decToBcd(date.year - YEAR_OFFSET)};
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ESP_ERROR_CHECK(I2C_Write(PCF85063_ADDRESS, RTC_DAY_ADDR, buf, 4));
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}
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/******************************************************************************
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function: Set Time And Date
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parameter:
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Info:
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******************************************************************************/
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void PCF85063_Set_All(datetime_t time)
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{
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uint8_t buf[7] = {decToBcd(time.second),
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decToBcd(time.minute),
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decToBcd(time.hour),
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decToBcd(time.day),
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decToBcd(time.dotw),
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decToBcd(time.month),
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decToBcd(time.year - YEAR_OFFSET)};
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ESP_ERROR_CHECK(I2C_Write(PCF85063_ADDRESS, RTC_SECOND_ADDR, buf, 7));
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}
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/******************************************************************************
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function: Read Time And Date
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parameter:
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Info:
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******************************************************************************/
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void PCF85063_Read_Time(datetime_t *time)
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{
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uint8_t buf[7] = {0};
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ESP_ERROR_CHECK(I2C_Read(PCF85063_ADDRESS, RTC_SECOND_ADDR, buf, 7));
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time->second = bcdToDec(buf[0] & 0x7F);
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time->minute = bcdToDec(buf[1] & 0x7F);
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time->hour = bcdToDec(buf[2] & 0x3F);
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time->day = bcdToDec(buf[3] & 0x3F);
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time->dotw = bcdToDec(buf[4] & 0x07);
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time->month = bcdToDec(buf[5] & 0x1F);
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time->year = bcdToDec(buf[6])+YEAR_OFFSET;
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}
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/******************************************************************************
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function: Enable Alarm and Clear Alarm flag
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parameter:
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Info:
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******************************************************************************/
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void PCF85063_Enable_Alarm()
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{
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uint8_t Value = RTC_CTRL_2_DEFAULT | RTC_CTRL_2_AIE;
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Value &= ~RTC_CTRL_2_AF;
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ESP_ERROR_CHECK(I2C_Write(PCF85063_ADDRESS, RTC_CTRL_2_ADDR, &Value, 1));
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}
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/******************************************************************************
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function: Get Alarm flay
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parameter:
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Info:
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******************************************************************************/
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uint8_t PCF85063_Get_Alarm_Flag()
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{
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uint8_t Value = 0;
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ESP_ERROR_CHECK(I2C_Read(PCF85063_ADDRESS, RTC_CTRL_2_ADDR, &Value, 1));
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//printf("Value = 0x%x",Value);
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Value &= RTC_CTRL_2_AF | RTC_CTRL_2_AIE;
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return Value;
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}
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/******************************************************************************
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function: Set Alarm
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parameter:
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Info:
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******************************************************************************/
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void PCF85063_Set_Alarm(datetime_t time)
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{
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uint8_t buf[5] ={
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decToBcd(time.second)&(~RTC_ALARM),
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decToBcd(time.minute)&(~RTC_ALARM),
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decToBcd(time.hour)&(~RTC_ALARM),
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//decToBcd(time.day)&(~RTC_ALARM),
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//decToBcd(time.dotw)&(~RTC_ALARM)
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RTC_ALARM, //disalbe day
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RTC_ALARM //disalbe weekday
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};
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ESP_ERROR_CHECK(I2C_Write(PCF85063_ADDRESS, RTC_SECOND_ALARM, buf, 6));
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}
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/******************************************************************************
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function:
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parameter:
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Info:
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******************************************************************************/
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void PCF85063_Read_Alarm(datetime_t *time)
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{
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uint8_t bufss[6] = {0};
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ESP_ERROR_CHECK(I2C_Read(PCF85063_ADDRESS, RTC_SECOND_ALARM, bufss, 6));
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time->second = bcdToDec(bufss[0] & 0x7F);
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time->minute = bcdToDec(bufss[1] & 0x7F);
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time->hour = bcdToDec(bufss[2] & 0x3F);
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time->day = bcdToDec(bufss[3] & 0x3F);
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time->dotw = bcdToDec(bufss[4] & 0x07);
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}
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/******************************************************************************
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function: Convert normal decimal numbers to binary coded decimal
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parameter:
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Info:
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******************************************************************************/
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static uint8_t decToBcd(int val)
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{
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return (uint8_t)((val / 10 * 16) + (val % 10));
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}
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/******************************************************************************
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function: Convert binary coded decimal to normal decimal numbers
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parameter:
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Info:
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******************************************************************************/
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static int bcdToDec(uint8_t val)
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{
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return (int)((val / 16 * 10) + (val % 16));
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}
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/******************************************************************************
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function:
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parameter:
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Info:
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******************************************************************************/
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void datetime_to_str(char *datetime_str,datetime_t time)
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{
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sprintf(datetime_str, " %d.%d.%d %d %d:%d:%d ", time.year, time.month,
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time.day, time.dotw, time.hour, time.minute, time.second);
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}
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#pragma once
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#include "I2C_Driver.h"
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//PCF85063_ADDRESS
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#define PCF85063_ADDRESS (0x51)
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//
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#define YEAR_OFFSET (1970)
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// registar overview - crtl & status reg
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#define RTC_CTRL_1_ADDR (0x00)
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#define RTC_CTRL_2_ADDR (0x01)
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#define RTC_OFFSET_ADDR (0x02)
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#define RTC_RAM_by_ADDR (0x03)
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// registar overview - time & data reg
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#define RTC_SECOND_ADDR (0x04)
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#define RTC_MINUTE_ADDR (0x05)
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#define RTC_HOUR_ADDR (0x06)
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#define RTC_DAY_ADDR (0x07)
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#define RTC_WDAY_ADDR (0x08)
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#define RTC_MONTH_ADDR (0x09)
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#define RTC_YEAR_ADDR (0x0A) // years 0-99; calculate real year = 1970 + RCC reg year
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// registar overview - alarm reg
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#define RTC_SECOND_ALARM (0x0B)
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#define RTC_MINUTE_ALARM (0x0C)
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#define RTC_HOUR_ALARM (0x0D)
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#define RTC_DAY_ALARM (0x0E)
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#define RTC_WDAY_ALARM (0x0F)
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// registar overview - timer reg
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#define RTC_TIMER_VAL (0x10)
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#define RTC_TIMER_MODE (0x11)
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//RTC_CTRL_1 registar
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#define RTC_CTRL_1_EXT_TEST (0x80)
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#define RTC_CTRL_1_STOP (0x20) //0-RTC clock runs 1- RTC clock is stopped
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#define RTC_CTRL_1_SR (0X10) //0-no software reset 1-initiate software rese
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#define RTC_CTRL_1_CIE (0X04) //0-no correction interrupt generated 1-interrupt pulses are generated at every correction cycle
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#define RTC_CTRL_1_12_24 (0X02) //0-24H 1-12H
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#define RTC_CTRL_1_CAP_SEL (0X01) //0-7PF 1-12.5PF
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//RTC_CTRL_2 registar
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#define RTC_CTRL_2_AIE (0X80) //alarm interrupt 0-disalbe 1-enable
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#define RTC_CTRL_2_AF (0X40) //alarm flag 0-inactive/cleared 1-active/unchanged
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#define RTC_CTRL_2_MI (0X20) //minute interrupt 0-disalbe 1-enable
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#define RTC_CTRL_2_HMI (0X10) //half minute interrupt
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#define RTC_CTRL_2_TF (0X08)
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//
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#define RTC_OFFSET_MODE (0X80)
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//
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#define RTC_TIMER_MODE_TE (0X04) //timer enable 0-disalbe 1-enable
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#define RTC_TIMER_MODE_TIE (0X02) //timer interrupt enable 0-disalbe 1-enable
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#define RTC_TIMER_MODE_TI_TP (0X01) //timer interrupt mode 0-interrupt follows timer flag 1-interrupt generates a pulse
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// format
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#define RTC_ALARM (0x80) // set AEN_x registers
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#define RTC_CTRL_1_DEFAULT (0x00)
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#define RTC_CTRL_2_DEFAULT (0x00)
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#define RTC_TIMER_FLAG (0x08)
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typedef struct {
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uint16_t year;
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uint8_t month;
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uint8_t day;
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uint8_t dotw;
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uint8_t hour;
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uint8_t minute;
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uint8_t second;
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}datetime_t;
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extern datetime_t datetime;
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void PCF85063_Init(void);
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void PCF85063_Loop(void);
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void PCF85063_Reset(void);
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void PCF85063_Set_Time(datetime_t time);
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void PCF85063_Set_Date(datetime_t date);
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void PCF85063_Set_All(datetime_t time);
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void PCF85063_Read_Time(datetime_t *time);
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void PCF85063_Enable_Alarm(void);
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uint8_t PCF85063_Get_Alarm_Flag();
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void PCF85063_Set_Alarm(datetime_t time);
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void PCF85063_Read_Alarm(datetime_t *time);
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void datetime_to_str(char *datetime_str,datetime_t time);
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// weekday format
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// 0 - sunday
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// 1 - monday
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// 2 - tuesday
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// 3 - wednesday
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// 4 - thursday
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// 5 - friday
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// 6 - saturday
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